[Mimedefang] Getting the error "Use of uninitialized value inconcatenation"

[Kevin A. McGrail]

It just means one of your variables in that md_syslog is undef.  You can
safely ignore the error if the spf query routine can correctly return undef.
You could also try adding this to your mimedefang-filter and try and hide
the messages:

use warnings;
no warnings 'uninitialized';


> I'm getting the following errors in my logs, and I cant seem to pin them
> down....
> Line 491 of my filter, the line number referenced in the error messages
> above, is the "md_syslog" line of the portion of filter_sender(), below.